The use case openBIM building permit procedure of the City of Vienna describes the exchange information requirements for the openBIM submission to the City of Vienna. This information requirement applies to the builder's architectural model - hereinafter referred to as the building application model (BAM) - which is used in the course of the pilot operation for the openBIM building permit procedure of the City of Vienna Building Police. This is an officially published exchange information requirement of the City of Vienna, which is based on the information requirement of the BRISE-Vienna research and development project. It should be noted that the enclosed information requirement represents a development status and that further development (adaptation/addition/reduction) is planned in the course of pilot operation (see version number and revision list).
The information requirement describes all IFC element classes required in the building application models in their level of detail. The information requirement depth (LOIN) is defined here.

• Level of Geometry (LOG): The LOG describes the geometric information level (modelling method) of a model element depending on the element class used.
• Level of Information (LOI): The LOI describes the alphanumeric level of information of a model element depending on the element class used.

The LOI and the selection sets of the element classes, including details of the value type, the value unit and the location, are listed below in xlsx, pdf and ids formats:

• Information request-PDF
• Information request-xslx
• Information request-IDS

The classification requirements of the IFC specification apply in principle; the element classes and their characteristics must be filled according to the specifications of buildingSMART/IFC data structure in accordance with ISO 16739.
ÖNORM A 6241-2 must be observed with regard to the modelling of building application models. The IFC versions IFC2x3 and IFC4 Add2 TC1 are permitted for the creation of the BAM.

Contact details
Municipal Department 37 - Building Police
Department for Technology, Digitalisation and Innovation
tdi(at)ma37.wien.gv.at
+43 1 4000 37300
1200 Vienna, Dresdner Straße 82, Vienna
Creation and processing:
The further development of the openBIM construction process and corresponding adaptation of the information request
is carried out by:
Municipal Department 37 - Building Police
Department for Technology, Digitalisation and Innovation
Roman Schneider, MSc (Head of Unit)
Dipl.-Ing. Markus Icha, BSc (clerk)
In co-operation with:
Vienna University of Technology
Institute of Construction Management and Construction Industry
Research Department Digital Construction Process
Assistant Prof. Dipl.-Ing. Dr.techn Harald Urban (Deputy Head)
Univ.Ass. Dipl.-Ing. Simon Fischer, BSc (Assistant)
Dipl.-Ing. Daniel Pfeiffer, BSc (Assistant)
Chamber of Civil Engineers
Architects and Engineers
Vienna. Lower Austria. Burgenland.
Arch. Dipl.-Ing. Wolfgang Kurz (Member, BIM Committee)
Arch. Dipl.-Ing. Christine Horner (Member, BIM Committee)

Example representation of the IFC element classes:
ODE - Office for Digital Engineering